WO2021005383A1 - Procédé d'amélioration de la récupération de pétrole - Google Patents

Procédé d'amélioration de la récupération de pétrole Download PDF

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Publication number
WO2021005383A1
WO2021005383A1 PCT/HR2019/000018 HR2019000018W WO2021005383A1 WO 2021005383 A1 WO2021005383 A1 WO 2021005383A1 HR 2019000018 W HR2019000018 W HR 2019000018W WO 2021005383 A1 WO2021005383 A1 WO 2021005383A1
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WO
WIPO (PCT)
Prior art keywords
oil
borehole
source
tubing
boreholes
Prior art date
Application number
PCT/HR2019/000018
Other languages
English (en)
Inventor
Bruno MLINAR
Mladen BABIC
Kresimir Keglevic
Original Assignee
Mlinar Bruno
Babic Mladen
Kresimir Keglevic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mlinar Bruno, Babic Mladen, Kresimir Keglevic filed Critical Mlinar Bruno
Priority to US17/625,666 priority Critical patent/US20220372854A1/en
Priority to PCT/HR2019/000018 priority patent/WO2021005383A1/fr
Priority to ARP190102773A priority patent/AR116559A1/es
Publication of WO2021005383A1 publication Critical patent/WO2021005383A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production

Definitions

  • the present invention relates to a method of hydrocarbon recovery from sites which, by standard procedures, are deemed as unprofitable for hydrocarbon exploitation, as well as to a method for improving the utilization of hydrocarbon sites still in use and economically viable.
  • the method of the present invention is based on the use of electric current and magnetic pulses. According to the international patent classification the present invention is classified under the subgroup E21B 43/16 - Improvement of the separation method for obtaining hydrocarbons and under the subgroups E21B 43/25 - Methods for stimulating hydrocarbon production.
  • the heating is achieved by the passing of the electric current through the heating element of the heater installed in the borehole at the level of the oil bearing zone area while the heat from the heater is conveyed further by convection onto the fluids inside the borehole and the reservoir rock and onto the fluids of within the near- wellbore zone.
  • the third invention utilizing electric energy to heat the oil layer, but in this patent heating is achieved by converting electricity to high-frequency waves, is described in the invention number CA 2637984.
  • the document states that the method is based on the capacitive charge and discharge of the media and not on the electro osmotic flow or on any electrochemical reactions.
  • this document does not provide any data on the tests carried out in oil fields with carbonate rocks or shale. The only test carried out was on an oil field with sandstone used as a medium.
  • sandstone rocks are in most cases more porous than other reservoir rocks such as carbonates, dolomites and shales, and most often does not have double porosity which is a combination of rock and cracking porosity and secondly it should be noted that the oil field selected for the test method contains oil of relatively low viscosity 10 - 15 cP.
  • the described method requires the establishment of a relatively high voltage between the two electrodes, ranging between 0.4 V and 2 V for each meter of distance between electrodes electrode distance meter (page 16, application number 6).
  • a relatively high voltage between the two electrodes ranging between 0.4 V and 2 V for each meter of distance between electrodes electrode distance meter (page 16, application number 6).
  • the boreholes are usually separated by 300 to 500 meters, such a gradient requires 500 meters of hypothetical distance between two boreholes and between 200 V and 1000 V of electric power voltage gradient, thus resulting in a very high electrical energy consumption and accelerated corrosion on the anode.
  • the electrodes of the invention under number US 687 556 B2 should be placed very close to each other, which is not economical or if the invention is to be applied by incorporating special electrodes into existing boreholes, the vast majority of oil in the deposit would not have be subjected to electrochemical reactions as the boreholes are spaced 100 or more meters from each other, depending on the geological structure of the deposit, on the method of obtaining crude oil and on the characteristics of crude oil in the deposit.
  • the technical problem that is to be solved by the present invention is the exploitation of oil fields where oil of very high viscosity is extracted, i.e. the gradual conversion of heavy oil into light oil, i.e. into light fractions in the oil deposit itself, with the same length of the entire deposit between the two boreholes-electrodes, not just at or near the boreholes-electrodes.
  • Another aim of the present invention is to exploit oilfields whose medium is shale and / or carbonate rock, resulting in a substantial reduction of costs in relation to the standard methods and to the methods described in the previously quoted state of the art.
  • the object of the invention is to exploit already existing, naturally generated electric fields within the very oil deposit, that is the natural effect known as the telluric current and spontaneous soil potential.
  • the aim of the invention and the problem solved by the present invention is to eliminate the drawbacks of the method disclosed in documents number WO2016 / 045682 and US 687556 B2, which are primarily related to the need to place special electrodes inside the borehole, or near the borehole.
  • this brings a number of complications and increases in the cost of technology utilization due to additional works associated with lowering and installing special electrodes inside the borehole, which in cases of application on boreholes with marginal production means that such use of technology becomes unprofitable.
  • the electric current and the field do not have an equal effect on the oil deposit which is further away from the borehole where the cathode is installed, nor does the vertical direction to the oil deposit, but it rather bends towards the cathode, in the direction parallel to the ground surface, which causes the effect of the electric field only close to the borehole where the cathode is installed, and this brings a significant reduction in utilization, since the electric field does not act on the parts of the oil deposit which are more distant to the borehole inside which the cathode is installed.
  • the aforementioned technical problems were solved in such a way that an electromagnetic field acts on the site and not only the electric field, while the electric circuit between two or more boreholes is closed using the constructions equipment already existing in the borehole, i.e. the steel casings and / or upstream production tubing.
  • the present invention does not use the classical electrode and there is no need to place the electrode inside the borehole or near the borehole to ensure a homogeneous electrical field across the entire depth of the borehole.
  • the efficiency of the invention is achieved by alignment of the polarity and the frequency of the electric field which is formed by the closing of the electric current circuit from a direct current source, which may be continuous, pulsating or impulse, which is done by delivering electric current from on the surface throughout the oil deposit by using two or more oil wells as electrodes, the electromagnetic impulse emitted from the source of electromagnetic waves located on the surface and the existing, naturally- induced electric fields that already exist within the oil deposit and the rocks surrounding it.
  • a direct current source which may be continuous, pulsating or impulse, which is done by delivering electric current from on the surface throughout the oil deposit by using two or more oil wells as electrodes, the electromagnetic impulse emitted from the source of electromagnetic waves located on the surface and the existing, naturally- induced electric fields that already exist within the oil deposit and the rocks surrounding it.
  • Polarity synchronization means that the polarity of the externally induced electric field does not deviate more than 45 degrees from the direction of the polarity of the natural electric field present in the ground but also in the oil deposit.
  • the direction of the natural polarity of the soil and the oil layer is determined by measuring the voltage between the two electrodes embedded in the ground and by moving the distance angle between one electrode with respect to another which remains fixed by 5 degrees, until completing the full circle of 360 degrees.
  • the direction of the electrodes that measures the highest electrical current is taken as the direction of the natural polarity of the soil. To reach optimum results according to the present invention, it was designed a special source of magnetic field with which the oil deposit is treated from the surface.
  • the subject matter invention is not based on capacitive discharging because shale and especially carbonate rocks or dolomites due to their low porosity cannot ensure a positive effect of the capacitive discharge onto the oil drainage, according to the present invention there is no time and energy loss for capacitive charging of the rocks.
  • the synchronized action of an electric field established between one or more anodes and cathodes and an electromagnetic field emitted from the surface of the source located above the oil deposit affects the physical characteristics that affect the borehole production and the economic viability of the oil deposit.
  • Both the electrical and the magnetic field affect the capillary forces in the deposit, i.e. they decrease the affinity of the reservoir rock to capillary attract the oil, simultaneously increasing the reservoir rock’s capacity to attract capillary water, i.e. they facilitate the changes of the characteristics of reservoir rocks from oil-resistant oil wet to water-resistant water wet .
  • Another effect is the increase in the flow of liquids - oil and water - contained in the oil layer, through the porous environment that makes the deposit due to the electro osmotic effect caused by the directed electric field. Since the intensity of the electro-osmotic effect depends primarily on porosity rather than the hydraulic fluid flow capacity of porous rock subjected to hydraulic pressure gradient (permeability), this effect can be used to squeeze out mobilize additional oil from the reservoir rocks characterized by a double dual porosity, or in the same deposit, the existence of a small porosity fractures of high hydraulic conductivity and the so-called matrix wall reservoir rock of high porosity but low hydraulic conductivity.
  • the third action is the effect on the chemical composition of the oil in the deposit itself, in such a way that heavy and viscous to very viscous oil gradually turns into a lighter or less viscous oil.
  • the present invention provides a reduction of oil viscosity for factor 10, thus enabling the exploitation of oil fields that contain very viscous oil.
  • oil viscosity for factor 10
  • the surprising effect of the process according to the present invention is the content of oil that changes in a way that increases the proportion of saturated hydrocarbons and aromatic hydrocarbons and reduces the proportion of resin and asphaltene.
  • the present invention relates to a process for pumping producing crude oil from oilfields by applying direct current electric field, which can be continuous, pulsating or impulse and the pulsating magnetic field on the oil deposit that is on the oil, in such a way that steel castings 17 and / or production tubing 16 are used as electrodes 7, 8 whereby heavy oil is gradually transformed into a light oil while the magnetic field is generated by the passing of the current from the source of the DC 1 through the source of the magnetic field 2, where the source of the DC 1 provides a voltage of 5 to 100 mV per meter of distance between electrodes.
  • direct current electric field which can be continuous, pulsating or impulse and the pulsating magnetic field on the oil deposit that is on the oil, in such a way that steel castings 17 and / or production tubing 16 are used as electrodes 7, 8 whereby heavy oil is gradually transformed into a light oil while the magnetic field is generated by the passing of the current from the source of the DC 1 through the source of the magnetic field 2, where the source of the DC 1 provides
  • the cathode 8 and the anode 7 are used the upstream production tubings 16 or steel castings 17 or a combination of steel castings 17 and the upstream production tubings 16,
  • the cathode 8 uses the upstream tubing 16 located in the perforated core zone of the main borehole zone, and as the anode 7 are used castings casing or liner of the side borehole 17.
  • Both the base borehole and the additional lateral conduit 23 have to penetrate through the same oil layer and maintain either by contact with it by perforating steel castings casing 17 and cement 15, either by impregnating completing as open hole the borehole sections which is passing through the oil layer.
  • Oil is, after becoming less viscous, and when the additional effects of electro-osmosis and changes in rock's resistance wettability increase the way flow quantity of crude oil into the borehole channel, produced through the upstream tubing, separated from water and gas and saved it in the reservoirs using some of the known methods of mechanical lifting of oil from deposits, such as dehydration and separation.
  • Another aspect of the invention relates to the reduction of oil viscosity by the procedure described above, whereby lighter oil, which is more suitable for extraction from the oilfield on the surface, is produced.
  • the third aspect of the invention relates to improving oil quality by the process described above in terms of increasing the proportion of saturated hydrocarbons and aromatic hydrocarbons and reducing the proportion of resin and asphaltene in it.
  • the fourth aspect of the invention relates to an increase in the technologically possible recovery factor exploitation of the hydrocarbon deposit - crude oil by mobilizing the oil trapped in the burrs or cracks of the reservoir rock, which were so far immovable, and by altering the wettability of the rocks from oil resistant oil wet to water-resistant water wet and that is achieved by using the electro-osmotic effect that pushes the oil from porous but low hydraulic permeable parts of the deposits, such as, for example, dual porosity doubleporosity-resistant reservoir rocks.
  • the energy supplied by the DC direct current source to the electrodes as well as the surface source of the electromagnetic waves ranges from 0.5 to 3 kWh depending on the type and composition of the reservoir rocks, the distance between the boreholes, the proportion of layered formation water in the deposit fluids and the salinity and the chemical composition of the layered formation water.
  • the source of the magnetic field according to the present invention is at least one coil. In a good version of the invention, the source of the magnetic field is made of two coils, in a more preferred version of three coils, and in the most preferred of four coils.
  • the primary objective of the invention is the improved oil drainage recovery by applying the electric field of the DC and the electromagnetic field on the oil deposit or on the oil.
  • a particularly good and preferable version of the invention uses the natural electric field of the oil deposit itself in such a way that the polarity of at least one of the external sources of energy is aligned with the direction of the natural polarity of the soil or the direction of the electric field naturally present in the soil or the oil deposit, where the said method comprises of the following steps: a) Selection of underground oil deposits suitable for the application of the method and after the selection of the deposit, b) selection of one or more boreholes where the method will be applied c) Extraction of oil from at least one borehole; where the method among the said steps also comprises of the following additional steps:
  • step A first is to be performed the step encompassing the determination of the direction of the polarity of the naturally present electric field in the oil layer and then alignment of the polarity of at least one of the external sources of the electric field with the direction of the natural polarity.
  • a tubing system of electrically non-volatile material 12 is inserted into the collecting tubing system 11 which is connected to the rest of the collecting tubing.
  • casings 17 and tubing 16 are electrically insulated from the surface collecting system 11 by inserting tubes of nonconducting material 12 between the tubing 16 and the surface collecting tubing 11.
  • Figure 1 is a borehole with a source of direct current connected to the electrodes and to the source of the magnetic field
  • Figure 2 shows the installation on the borehole according to the present invention
  • Figure 3 is a view of an execution of the present invention with a single borehole
  • 6- oil bearing layer that can be a sandstone, carbonate, dolomite, shale or other porous rock in which are present oil, water and gas, - anode - a conduit that penetrates into the oil layer. It can be an oil production borehole, water injection well, conserved or neutralized liquidated borehole, or some other conductive material that penetrates into the oil layer,
  • a tube of electrically non-volatile nonconductive material such as, for example, rubber or plastic, is inserted to provide electrical circuit closure through the oil layer
  • the cement layer between the casing 17 and the soil (sediment layers) through which the borehole passes provides partial electrical isolation between the casing 17 and the ground, enabling most of the electric energy to flow through the electric energy circuit closed through the oil layer between the anode and the cathode,
  • Tubing that is the production tube of the borehole.
  • Tubing is made of el. conductive material
  • Casing is made of electrically conductive material,8- perforations through a part of the casing and the cement which are passing through the oil layer and providing a contact of the oil layer with the borehole. Through these perforations oil, water and gas penetrate into the production borehole, while providing electrical contact with the layer,
  • 21-distancer i.e. a cylindrical device of electrically non-volatile nonconductive material which is mounted around the tubing and prevents the contact of the tubing and casing, thereby and consequently closing the electrical field
  • the method is based on the effects caused by the action of a direct electric current flowing to the oil layer through at least two boreholes and passing through the oil layer, i.e. through the porous rock saturated with crude oil, water with dissolved salts and gas, with electromagnetic impulses from the surface source causing the additional polarization of the soil particles of which the oil layer is formed, i.e. causing induced polarization, water, and heavy metal particles, which are an integral part of the reservoir rock material.
  • the direction of the natural polarization of the reservoir rocks is also taken into account, and the position of the anode and cathode is selected or the direction of the polarity of the electromagnetic field surface field is directed so that the induced polarization is as much in conformity with the direction of the natural polarization of the deposit .
  • the source of the direct current 1 acts together with the source of the electromagnetic impulses 2 to the oil layer 6.
  • Electro magnetic impulse source is applied to ground surface 5 between two oil boreholes serving as electrodes thus emitting electromagnetic impulses 3.
  • the electromagnetic impulses 3 extend through the soil above the oil layer 4 and act on the oil layer 6 causing induced polarization.
  • the direct current source 1 is connected to the cables 9 by surface mountings or other suitable electrically conductive part of the boreholes about the surface of the earth.
  • Electrodes that is as anodes 7 and cathode 8 are used the existing boreholes that have the contact with the same oil layer 6 or that have hydraulic communication, but it is not essential that an oil borehole is used as the anode, as it can also be used a water injection well, a preserved borehole or any electrical conductive element, as long as the condition of the simultaneous contact between the borehole and the cathode 8 and anode 7 and the same oil layer 6 is fulfilled.
  • the DC direct electric current source 1 is connected to the source of electromagnetic impulses (2) by conductors.
  • tubings of electrically non-volatile material (12) are connected to the outlet from the borehole to the collecting tubing system (11) which is connected to the rest of the collecting tubing in any convenient way to ensure leakproofness of all fluids and gases.
  • the existing electric conductive elements of the borehole such as casing (17) and/or upstream tubing (16). Electrical insulation and preventing the circuit is closed over the layers (4) above the treated oil layer (6) is achieved by means of a cement layer (15) which is already an integral part of the boreholes.
  • the DC current from the source (1) flows, i.e., the circuit is closed between the plus and minus poles, respectively between the anode (7) and the cathode (8) using the casing (17) and / or the upstream tubing (16) as electric conduits.
  • the electric circuit is further closed by the perforations of the borehole (18) which enable the hydraulic and electrical connection between the borehole and the oil layer (6).
  • the electric field operates from the anode (8) to the cathode (7).
  • This embodiment is possible in such a way that more than one borehole is connected to the circuit, for example, that an anode is connected to multiple cathodes or multiple anodes to one cathode.
  • FIG. 3 The possible way in which one borehole can be made or adapted to serve simultaneously both as the anode and as the cathode is shown in Figure 3. As shown, it is possible to create and equip a new borehole or an already existing borehole.
  • the borehole is made in such a way that one or more borehole channels, which can be under any angle in relation to the ground, is made one or more borehole channels or lateral canals 23.
  • the electrical connection contact minus half pole of the direct current 1 source is connected to the tubing of the base borehole which serves as the cathode.
  • the contact binds to the surface reinforcement or the surface- accessible steel tubing that is on one side connected by 17 and the upstream tubing 16, and on the other to the inserted tubing made of insulating material 12.
  • the tubing 16 Prior to connecting the minus pole, the tubing 16 is separated by a special device of electrically non-volatile nonconductive material 20 so as not to be in electrical contact with the casing 17 and also around the tubing 16 are incorporated special devices, the so-called spacers or distancers 21 of non-electrically conductive material in form of a hollow cylinder with an inner diameter sufficient for the tubing to pass through it. 16.
  • Distancers 21, are incorporated in an arbitrary number which has to be sufficient to provide insulation, i.e. to prevent contact between the steel parts of the casing 17 and the tubing 16, thereby closing the electrical circuit between them.
  • the current circuit is closed through the oil layer 6 and the direction of the action of the electric field 19 is from positive polarized perforations 18 toward the negative polarized perforations 18.
  • the packer 24 is inserted to prevent the fluids to flow into the annular space between the casing 17 and the tubing 16, while inside the lateral side cavity wellbore 23 above the perforations 18 a plug is to be made 25 to prevent the fluids to enter in the side borehole and then in the basic borehole.
  • the cement layer 15 ensures electrical insulation between the borehole casing and the soil layer through which the borehole and lateral duct pass and ensures and this ensures that the electric circuit is closed exclusively through the perforations 18 and the petroleum layer 6.
  • the surface source of electromagnetic impulses 2 is used in the manner described above.
  • the test was made in conditions where the boreholes oil wells used as electrodes were set at the distance of 510 m one from the other.
  • the depth of the borehole oil well used, according to the present invention, as a cathode is of 1210 m and the depth of the oil well borehole used according to the present invention as an anode is of 1219 m, both are cemented and tempered cased : cathode up to 1204 m and the remaining 6 m is not tempered cased, making it an "open hole” and the anode up to 1213 m is also cemented and tempered cased while the remaining 7 m is‘undone’ not cased that is an‘open hole’.
  • the direction of the natural polarization of the field is determined, and the polarization direction of the electromagnetic field from the sources of electromagnetic waves is oriented to coincide with the direction of natural polarization.
  • the boreholes were prepared in such a way that a series of upstream production tubes - tubings were extended up to half a meter from the bottom of the borehole to allow the upstream holes production tubing to enter the open hole section of the borehole. Both boreholes are prepared in this way.
  • the production of the borehole oil well planned to serve as a cathode was measured in such a way that the production of the borehole well is directed to a special reservoir, and by measuring the amount of oil and water in the reservoir that is daily emptied, it was established the average oil and water production immediately prior to the application of the invention.
  • the production was measured in the same way after the start of the application of the invention, and oil and water production at the selected dates is shown in Table 2. December 3rd 2017 was the date of the begging of measuring and it relates to measurements prior to the initial date of method application and the measurements on dates later than that date refer to the time after the application of the method.
  • Table 2 oil production and water share in production before and after the application of the method
  • the fluid level in the annular space was also measured using a sonolog acoustic device.
  • the fluid level was monitored during the first month after the application of the invention to see the electro-osmotic effect.
  • the increase in fluid levels that is the reduction of the fluid level distance from the top of the boreholes, indicates the presence of the electro osmotic effect.
  • Measurement results on December 3rd 2017 refers to the fluid level prior to the beginning of the method, and on the other dates after the beginning of the application of the method.
  • the depth pump parameters have not changed, such as length of the piston stroke and the number of strokes per minute.
  • Each side of the cable which represented plus pole (one side) and minus pole (other side) was connected with a steel pipe, which is further connected to one side on the casing and the tubing of the boreholes oil wells and, on the other, to the non-conductive pipe and The insulated ends of the cables were clamped by clamps to the described steel tubing on both oil wells boreholes, and insulated by insulating tape.
  • the DC electricity source was connected to the generating source of electromagnetic waves, which was placed in a perfectly flat position between two oil wells boreholes.
  • the DC electricity source which as a part includes an alternating current rectifier, was connected to a nearby AC electricity source.
  • oil samples taken from the borehole oil well serving as a cathode were analyzed and compared with also laboratory- analyzed samples of oil taken from the same oil well prior to the start of the application of the invention.
  • composition of the oil was determined by a column chromatographic method based on the principle of different absorption capabilities of certain types of compounds - SARA analysis.
  • the deasphalted sample is to be applied to a glass column filled with n-hexane and an adsorption agent (silica gel and aluminum oxide).
  • n-hexane an adsorption agent
  • benzene is gradually added to elute the aromatic hydrocarbons and a mixture of benzene and methanol which elute resins.
  • Types of compounds are separated based on the growing polarity of the solvent used for elution. After separation and evaporation of the solvent, saturated hydrocarbons, aromates and resins were weighted.
  • the mass of asphaltene is determined from the difference in the total mass and mass of said compounds. The results are given in Table 2 by mass%.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

Le procédé de l'invention décrit une manière d'améliorer la récupération de pétrole par l'action du champ électrique du courant continu et du champ électromagnétique sur le gisement de pétrole (6) qui est sur le pétrole, le procédé mentionné comprenant les étapes suivantes : a) La sélection des formations d'agrégats de roche submergées qui contiennent le pétrole ; b) La sélection d'un ou plusieurs puits de forage où le procédé sera appliqué ; c) L'extraction de pétrole à partir d'au moins un trou de forage de puits ; En prenant en compte le fait que les étapes mentionnées ci-dessus du procédé comprennent en outre les étapes suivantes : Un acier connecté (17) et/ou la colonne de production d'amont (16) des puits de forage avec la source d'électricité CC (1), les tubages d'acier (17) et/ou la colonne de production d'amont (16) prenant les rôles des électrodes (7, 8) ; B. La connexion d'une source de courant électrique (1) avec une source de champ électromagnétique (2) ; C La diminution de l'affinité de la roche réservoir pour attirer par capillarité l'huile, et l'augmentation simultanée de l'affinité de la roche réservoir par rapport à l'eau d'attraction capillaire, la réduction de la viscosité de l'huile par l'application des champs électriques et magnétiques, et l'augmentation du flux électro-osmotique de l'huile et de l'eau en couches allant de la direction de l'anode à la direction de la cathode.
PCT/HR2019/000018 2019-07-08 2019-07-08 Procédé d'amélioration de la récupération de pétrole WO2021005383A1 (fr)

Priority Applications (3)

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US17/625,666 US20220372854A1 (en) 2019-07-08 2019-07-08 Method for enhancing oil recovery
PCT/HR2019/000018 WO2021005383A1 (fr) 2019-07-08 2019-07-08 Procédé d'amélioration de la récupération de pétrole
ARP190102773A AR116559A1 (es) 2019-07-08 2019-09-30 Método para mejorar la recuperación de petróleo

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